# VoiceBox vs PDF AI

The clearest difference is in-app purchases: VoiceBox at none against PDF AI's 5. PDF AI's advantage is update cadence (every 3 weeks vs every 32 months) and device support. On price there is nothing between them.

Both are free to download. PDF AI sells 5 in-app purchases, starting at $7.99 per 7 days. VoiceBox asks for nothing beyond the download.

VoiceBox ships an update every 32 months, PDF AI every 3 weeks. The most recent releases landed on October 12, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | VoiceBox | PDF AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (163 ratings)](https://appshunter.io/ios/app/pdf-ai-editor-scanner-chat/id6581489325/reviews)** |
| Number of ratings | — | **163** |
| Positive reviews | — | 88.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | Yes |
| Update frequency | Every 32 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 5 MB | 169 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [涛 李](https://appshunter.io/developer/1519937559) | [Yang Yang](https://appshunter.io/developer/1756128958) |

## What reviewers say

### VoiceBox

[App page](https://appshunter.io/ios/app/voicebox/id6465250245)

**In-app purchases:** none


### PDF AI

[App page](https://appshunter.io/ios/app/pdf-ai-editor-scanner-chat/id6581489325)

This application offers a comprehensive suite of AI-powered tools for managing PDF documents. Users can edit text and images, generate AI summaries, convert files to various formats, and securely sign documents. It prioritizes speed and privacy with local processing and encryption.

**Highlights:** Edit PDF text and images, AI-powered summaries and highlights, Annotate and collaborate on documents, Fill and e-sign forms, Convert PDFs to Word, Excel, PPT, Images, TXT, Secure offline scanning and organization

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly VIP | $7.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Monthly VIP | $14.99 | per month |
| Yearly VIP | $59.99 | per year |


## Frequently asked questions

### Is VoiceBox free?

VoiceBox is free to download, with no in-app purchases.

### Is PDF AI free?

PDF AI is free to download, with in-app purchases available.

### Which is updated more often, VoiceBox or PDF AI?

VoiceBox ships an update every 32 months, and PDF AI every 3 weeks. Most recently, VoiceBox was updated on October 12, 2026 and PDF AI on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*